User's Manual

PN 8100-40 Help Hot Line (U.S. only): 1-800-530-9960 3-7
620004-0 Rev. B
LGCell Main Hub Rear Panel
9-pin D-sub Connector
The 9-pin D-sub connector (labeled DIAGNOSTIC 1) provides contact closures and
error latches for monitoring major errors.
The following table lists the function of each pin on the 9-pin D-sub connector. Pin
locations are labeled on Figure 3-7.
Figure 3-7 9-pin D-sub Connector on the Main Hub
Use the error pin connections to determine the error status: send a current of no more
than 40 mA @ 40V DC maximum (4 mA @ 12V DC typical) through the positive
connection. The current will return through the negative connection. An error is indi-
cated if current ceases to flow through the error connection.
25-pin D-sub Connector
Reserved for factory use only.
Pin Function
1 +10 V (fused)
2 Not connected
3 Not connected
4 Error Latch (positive connection)
5 Error Latch (negative connection)
6 DC Ground (common)
7 Major Error (positive connection)
8 Error Reset
9 Major Error (negative connection)
REVERSE FORWARD DUPLEX
DIAGNOSTIC 2 DIAGNOSTIC 1